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Only fire metadata savers when appropriate

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This commit is contained in:
Luke Pulverenti
2013-06-24 21:22:21 -04:00
parent 12c6bc27f2
commit 92cd71143d
33 changed files with 389 additions and 164 deletions
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97
MediaBrowser.Server.Implementations/Providers/ProviderManager.cs
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@@ -60,8 +60,6 @@ namespace MediaBrowser.Server.Implementations.Providers
/// <value>The metadata providers enumerable.</value>
private BaseMetadataProvider[] MetadataProviders { get; set; }
private IEnumerable<IMetadataSaver> _savers;
/// <summary>
/// Initializes a new instance of the <see cref="ProviderManager" /> class.
/// </summary>
@@ -79,44 +77,6 @@ namespace MediaBrowser.Server.Implementations.Providers
_remoteImageCache = new FileSystemRepository(configurationManager.ApplicationPaths.DownloadedImagesDataPath);
configurationManager.ConfigurationUpdated += configurationManager_ConfigurationUpdated;
libraryManager.ItemUpdated += libraryManager_ItemUpdated;
}
private readonly ConcurrentDictionary<string, SemaphoreSlim> _fileLocks = new ConcurrentDictionary<string, SemaphoreSlim>();
/// <summary>
/// Handles the ItemUpdated event of the libraryManager control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="ItemChangeEventArgs"/> instance containing the event data.</param>
async void libraryManager_ItemUpdated(object sender, ItemChangeEventArgs e)
{
var item = e.Item;
foreach (var saver in _savers.Where(i => i.Supports(item)))
{
var path = saver.GetSavePath(item);
var semaphore = _fileLocks.GetOrAdd(path, key => new SemaphoreSlim(1, 1));
await semaphore.WaitAsync().ConfigureAwait(false);
try
{
_directoryWatchers.TemporarilyIgnore(path);
saver.Save(item, CancellationToken.None);
}
catch (Exception ex)
{
_logger.ErrorException("Error in metadata saver", ex);
}
finally
{
_directoryWatchers.RemoveTempIgnore(path);
semaphore.Release();
}
}
}
/// <summary>
@@ -134,12 +94,9 @@ namespace MediaBrowser.Server.Implementations.Providers
/// Adds the metadata providers.
/// </summary>
/// <param name="providers">The providers.</param>
/// <param name="savers">The savers.</param>
public void AddParts(IEnumerable<BaseMetadataProvider> providers,
IEnumerable<IMetadataSaver> savers)
public void AddParts(IEnumerable<BaseMetadataProvider> providers)
{
MetadataProviders = providers.OrderBy(e => e.Priority).ToArray();
_savers = savers;
}
/// <summary>
@@ -150,18 +107,14 @@ namespace MediaBrowser.Server.Implementations.Providers
/// <param name="force">if set to <c>true</c> [force].</param>
/// <param name="allowSlowProviders">if set to <c>true</c> [allow slow providers].</param>
/// <returns>Task{System.Boolean}.</returns>
public async Task<bool> ExecuteMetadataProviders(BaseItem item, CancellationToken cancellationToken, bool force = false, bool allowSlowProviders = true)
public async Task<ItemUpdateType?> ExecuteMetadataProviders(BaseItem item, CancellationToken cancellationToken, bool force = false, bool allowSlowProviders = true)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
// Allow providers of the same priority to execute in parallel
MetadataProviderPriority? currentPriority = null;
var currentTasks = new List<Task<bool>>();
var result = false;
ItemUpdateType? result = null;
cancellationToken.ThrowIfCancellationRequested();
@@ -188,15 +141,6 @@ namespace MediaBrowser.Server.Implementations.Providers
continue;
}
// When a new priority is reached, await the ones that are currently running and clear the list
if (currentPriority.HasValue && currentPriority.Value != provider.Priority && currentTasks.Count > 0)
{
var results = await Task.WhenAll(currentTasks).ConfigureAwait(false);
result |= results.Contains(true);
currentTasks.Clear();
}
// Put this check below the await because the needs refresh of the next tier of providers may depend on the previous ones running
// This is the case for the fan art provider which depends on the movie and tv providers having run before them
if (provider.RequiresInternet && item.DontFetchMeta)
@@ -216,14 +160,19 @@ namespace MediaBrowser.Server.Implementations.Providers
_logger.Error("Error determining NeedsRefresh for {0}", ex, item.Path);
}
currentTasks.Add(FetchAsync(provider, item, force, cancellationToken));
currentPriority = provider.Priority;
}
var updateType = await FetchAsync(provider, item, force, cancellationToken).ConfigureAwait(false);
if (currentTasks.Count > 0)
{
var results = await Task.WhenAll(currentTasks).ConfigureAwait(false);
result |= results.Contains(true);
if (updateType.HasValue)
{
if (result.HasValue)
{
result = result.Value | updateType.Value;
}
else
{
result = updateType;
}
}
}
return result;
@@ -238,7 +187,7 @@ namespace MediaBrowser.Server.Implementations.Providers
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{System.Boolean}.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
private async Task<bool> FetchAsync(BaseMetadataProvider provider, BaseItem item, bool force, CancellationToken cancellationToken)
private async Task<ItemUpdateType?> FetchAsync(BaseMetadataProvider provider, BaseItem item, bool force, CancellationToken cancellationToken)
{
if (item == null)
{
@@ -256,7 +205,14 @@ namespace MediaBrowser.Server.Implementations.Providers
try
{
return await provider.FetchAsync(item, force, CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, innerCancellationTokenSource.Token).Token).ConfigureAwait(false);
var changed = await provider.FetchAsync(item, force, CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, innerCancellationTokenSource.Token).Token).ConfigureAwait(false);
if (changed)
{
return provider.ItemUpdateType;
}
return null;
}
catch (OperationCanceledException ex)
{
@@ -268,14 +224,15 @@ namespace MediaBrowser.Server.Implementations.Providers
throw;
}
return false;
return null;
}
catch (Exception ex)
{
_logger.ErrorException("{0} failed refreshing {1}", ex, provider.GetType().Name, item.Name);
provider.SetLastRefreshed(item, DateTime.UtcNow, ProviderRefreshStatus.Failure);
return true;
return ItemUpdateType.Unspecified;
}
finally
{